Fix compiler warnings.
Delete cross-validation data splits by default to save memory.
Add assertion messages.
handling sparse idxs/beta correctly
old va to fvec
Perform cross-validation model building during the main Job, allows cancellation of cross-validation and waiting for correct overall modeling error to be displayed.
Put the Job's state into the DeepLearningModel's params object after Job removal.
Show cross-validation error in grid search, not training error.
Merge branch 'master' of https://github.com/0xdata/h2o
Don't score cross-validation if the main job is cancelled.
Summary runs faster and more error messages included
Merge branch 'master' of https://github.com/0xdata/h2o
Merge branch 'master' of https://github.com/0xdata/h2o
Prevent NPE.
WIP for PP-140: Add in nfolds parameter for GBM, DRF, and SpeeDRF. Cross-validation only working for NON grid search algorithm runs.
Merge branch 'master' of https://github.com/0xdata/h2o
Make execImpl protected instead of public.
Merge branch 'master' of https://github.com/0xdata/h2o
Merge branch 'master' into arno-deeplearning2

Conflicts:
	src/main/java/hex/deeplearning/DeepLearning.java
Fix of computation split boundaries + clarified naming of variables.